{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical"], "input": "A comprehensive study of the sonochemical degradation of dimethyl phthalate ( DMP ) was carried out using high - frequency ultrasonic processes ."}
{"Chemical": ["dimethyl phthalate", "DMP"]}